EP0992373A3 - System and method for shortening the braking distance and improving traction in motor vehicles - Google Patents

System and method for shortening the braking distance and improving traction in motor vehicles Download PDF

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Publication number
EP0992373A3
EP0992373A3 EP99115211A EP99115211A EP0992373A3 EP 0992373 A3 EP0992373 A3 EP 0992373A3 EP 99115211 A EP99115211 A EP 99115211A EP 99115211 A EP99115211 A EP 99115211A EP 0992373 A3 EP0992373 A3 EP 0992373A3
Authority
EP
European Patent Office
Prior art keywords
vehicle
shortening
friction
braking distance
improving traction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99115211A
Other languages
German (de)
French (fr)
Other versions
EP0992373A2 (en
EP0992373B1 (en
Inventor
Armin Schülke
Armin-Maria Verhagen
Roland Stoller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0992373A2 publication Critical patent/EP0992373A2/en
Publication of EP0992373A3 publication Critical patent/EP0992373A3/en
Application granted granted Critical
Publication of EP0992373B1 publication Critical patent/EP0992373B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B60T8/1764—Regulation during travel on surface with different coefficients of friction, e.g. between left and right sides, mu-split or between front and rear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B60G2400/61—Load distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/80—Exterior conditions
    • B60G2400/82—Ground surface
    • B60G2400/822—Road friction coefficient determination affecting wheel traction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/01—Attitude or posture control
    • B60G2800/012—Rolling condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/01—Attitude or posture control
    • B60G2800/016—Yawing condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2260/00—Interaction of vehicle brake system with other systems
    • B60T2260/02—Active Steering, Steer-by-Wire
    • B60T2260/024—Yawing moment compensation during mu-split braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/40—Coefficient of friction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Regulating Braking Force (AREA)
  • Vehicle Body Suspensions (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und ein System zur Bremswegverkürzung und Traktioneverbesserung eines Kraftfahrzeugs, das ein Wankstabilisierungssystem mit mindestens einem Stellantrieb pro Achse aufweist, der jeweils zwischen den beiden Hälften eines vorderen und hinteren Fahrwerkstabilisators angeordnet ist, das dadurch gekennzeichnet ist, daß bei fahrendem Fahrzeug ein Reibwert (µ) zwischen jedem Rad und der Fahrbahnoberfläche gemessen oder geschätzt wird, die so ermittelten Reibwerte (µ) der Räder der linken und rechten Fahrzeugseite miteinander verglichen werden, und wenn der Vergleich der Reibwerte einen Unterschied (hoch-µ, niedrig-µ) zwischen den Fahrzeugseiten ergibt, die Stellantriebe an den Achsen diagonal gegensinnig so verspannt werden, daß die Aufstandskräfte der Räder entsprechend den gemessenen unterschiedlichen Reibwerten erhöht bzw. erniedrigt werden.

Figure 00000001
The invention relates to a method and a system for shortening the braking distance and improving traction of a motor vehicle, which has a roll stabilization system with at least one actuator per axle, which is arranged between the two halves of a front and rear chassis stabilizer, which is characterized in that when the vehicle is moving Friction value (µ) between each wheel and the road surface is measured or estimated, the friction values (µ) of the wheels of the left and right side of the vehicle determined in this way are compared with one another, and if the comparison of the friction values shows a difference (high-µ, low-µ) between the sides of the vehicle, the actuators on the axles are clamped diagonally in opposite directions so that the contact forces of the wheels are increased or decreased in accordance with the measured different coefficients of friction.
Figure 00000001
EP99115211A 1998-10-09 1999-07-31 System and method for shortening the braking distance and improving traction in motor vehicles Expired - Lifetime EP0992373B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19846500A DE19846500A1 (en) 1998-10-09 1998-10-09 System and method for shortening the braking distance and improving traction in motor vehicles
DE19846500 1998-10-09

Publications (3)

Publication Number Publication Date
EP0992373A2 EP0992373A2 (en) 2000-04-12
EP0992373A3 true EP0992373A3 (en) 2000-06-07
EP0992373B1 EP0992373B1 (en) 2009-07-01

Family

ID=7883895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115211A Expired - Lifetime EP0992373B1 (en) 1998-10-09 1999-07-31 System and method for shortening the braking distance and improving traction in motor vehicles

Country Status (3)

Country Link
EP (1) EP0992373B1 (en)
JP (1) JP2000127733A (en)
DE (2) DE19846500A1 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10156087B4 (en) * 2001-11-16 2005-06-02 Müller Weingarten AG Device for processing a metal strip with different thicknesses
JP3781114B2 (en) * 2002-08-07 2006-05-31 トヨタ自動車株式会社 Vehicle ground load control device
DE10330895A1 (en) * 2003-07-09 2005-02-17 Daimlerchrysler Ag Control of straight-line interference of a motor vehicle
JP2005059613A (en) * 2003-08-11 2005-03-10 Toyota Motor Corp Suspension system for vehicle
EP1725439B1 (en) * 2004-03-16 2015-12-30 Continental Teves AG & Co. oHG Method for increasing the driving stability of a motor vehicle
DE102004029783A1 (en) * 2004-06-21 2006-01-05 Zf Friedrichshafen Ag Device and method for influencing the steering behavior of a motor vehicle
JP4685407B2 (en) * 2004-10-25 2011-05-18 トヨタ自動車株式会社 Vehicle behavior control device
JP4529661B2 (en) * 2004-12-02 2010-08-25 株式会社アドヴィックス ABS control device
DE102005009002B4 (en) 2005-02-28 2018-10-31 Volkswagen Ag Method for operating active stabilizers on motor vehicles
FR2896754B1 (en) * 2006-01-30 2008-04-11 Renault Sas METHOD FOR REDUCING THE BRAKING DISTANCE OF A MOTOR VEHICLE AND DEVICE FOR IMPLEMENTING SAID METHOD
DE102006016061A1 (en) * 2006-04-04 2007-10-11 Continental Teves Ag & Co. Ohg Traction control with active underbody e.g. for motor vehicles, increases maximum driving force through appropriate distribution of wheel vertical force on roads with different friction applied
JP4882848B2 (en) * 2007-04-23 2012-02-22 アイシン精機株式会社 Integrated vehicle behavior controller
JP2008285006A (en) 2007-05-17 2008-11-27 Advics:Kk Vehicular driving wheel load control device
DE102008003901A1 (en) 2008-01-10 2009-07-16 Bayerische Motoren Werke Aktiengesellschaft Wheel load adjusting device for use in double-track, two-axle motor vehicle, involves increasing vertical-load of wheel of driven axle supplying large drive torque during appropriate distribution of drive torque by traction control system
FR2933940B1 (en) * 2008-07-17 2011-01-21 Renault Sas IMPROVING MOTORITY ON ASYMMETRIC ADHESION OF A VEHICLE EQUIPPED WITH ACTIVE ANTI-ROLL BARS
FR2969564B1 (en) * 2010-12-22 2012-12-28 Renault Sa METHOD AND DEVICE FOR MONITORING A MOTOR VEHICLE IN A BRAKING CONDITION WITH ASYMMETRIC ADHESION
DE102015223666A1 (en) * 2015-11-30 2017-06-01 Continental Teves Ag & Co. Ohg Method and system for influencing the braking behavior of a vehicle
US20170158016A1 (en) * 2015-12-04 2017-06-08 Continental Automotive Systems, Inc. Air suspension indvidual corner control to optimize traction
DE102016110851B4 (en) 2016-06-14 2023-11-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for operating a motor vehicle
JP6604304B2 (en) * 2016-10-20 2019-11-13 トヨタ自動車株式会社 Vehicle stability control device
JP6583255B2 (en) * 2016-12-27 2019-10-02 トヨタ自動車株式会社 Vehicle travel control device
DE102017107603A1 (en) 2017-04-10 2018-10-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for operating a motor vehicle
US11077733B2 (en) 2018-11-26 2021-08-03 Continental Automotive Systems, Inc. Dynamic load transfer by switchable air volume suspension

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JPS6029317A (en) * 1983-07-27 1985-02-14 Nissan Motor Co Ltd Cornering limit restraining apparatus for vehicle
JPS624620A (en) * 1985-06-28 1987-01-10 Mazda Motor Corp Suspension device for automobile
EP0508640A1 (en) * 1991-04-06 1992-10-14 Lucas Industries Public Limited Company Wheel spin detection and traction control
US5229955A (en) * 1990-03-09 1993-07-20 Toyota Jidosha Kabushiki Kaisha Apparatus for detecting road surface frictional coefficient
US5482133A (en) * 1990-07-09 1996-01-09 Nissan Motor Co., Ltd. Traction control for automotive vehicle
US5517414A (en) * 1994-10-03 1996-05-14 Ford Motor Company Traction control system with active suspension
US5563792A (en) * 1992-11-12 1996-10-08 Ford Motor Company Vehicular surface traction characteristic estimation techniques
US5774821A (en) * 1994-11-25 1998-06-30 Itt Automotive Europe Gmbh System for driving stability control
DE19808673A1 (en) * 1997-09-30 1999-04-01 Daimler Benz Ag Braking force control system for road vehicle with electrically controlled four-circuit braking system and suspension system

Patent Citations (9)

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JPS6029317A (en) * 1983-07-27 1985-02-14 Nissan Motor Co Ltd Cornering limit restraining apparatus for vehicle
JPS624620A (en) * 1985-06-28 1987-01-10 Mazda Motor Corp Suspension device for automobile
US5229955A (en) * 1990-03-09 1993-07-20 Toyota Jidosha Kabushiki Kaisha Apparatus for detecting road surface frictional coefficient
US5482133A (en) * 1990-07-09 1996-01-09 Nissan Motor Co., Ltd. Traction control for automotive vehicle
EP0508640A1 (en) * 1991-04-06 1992-10-14 Lucas Industries Public Limited Company Wheel spin detection and traction control
US5563792A (en) * 1992-11-12 1996-10-08 Ford Motor Company Vehicular surface traction characteristic estimation techniques
US5517414A (en) * 1994-10-03 1996-05-14 Ford Motor Company Traction control system with active suspension
US5774821A (en) * 1994-11-25 1998-06-30 Itt Automotive Europe Gmbh System for driving stability control
DE19808673A1 (en) * 1997-09-30 1999-04-01 Daimler Benz Ag Braking force control system for road vehicle with electrically controlled four-circuit braking system and suspension system

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PATENT ABSTRACTS OF JAPAN vol. 009, no. 152 (M - 391) 27 June 1985 (1985-06-27) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 172 (M - 595) 3 June 1987 (1987-06-03) *

Also Published As

Publication number Publication date
JP2000127733A (en) 2000-05-09
DE19846500A1 (en) 2000-04-13
EP0992373A2 (en) 2000-04-12
DE59915047D1 (en) 2009-08-13
EP0992373B1 (en) 2009-07-01

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